WO2022019334A1 - コロナウイルス殺傷剤 - Google Patents
コロナウイルス殺傷剤 Download PDFInfo
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- WO2022019334A1 WO2022019334A1 PCT/JP2021/027361 JP2021027361W WO2022019334A1 WO 2022019334 A1 WO2022019334 A1 WO 2022019334A1 JP 2021027361 W JP2021027361 W JP 2021027361W WO 2022019334 A1 WO2022019334 A1 WO 2022019334A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P1/00—Disinfectants; Antimicrobial compounds or mixtures thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/20—Elemental chlorine; Inorganic compounds releasing chlorine
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/08—Chlorous acid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
- A61L2/18—Liquid substances
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
- A61L2101/02—Inorganic materials
- A61L2101/06—Inorganic materials containing halogen
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2103/00—Materials or objects being the target of disinfection or sterilisation
- A61L2103/05—Living organisms or biological materials
Definitions
- This disclosure relates to a coronavirus killing agent.
- the present disclosure also relates to methods of killing or inactivating coronavirus.
- the present disclosure also relates to chlorinated water for killing or inactivating coronavirus.
- HCoV-229E, HCoV-OC43, HCoV-NL63, and HCoV-HKU1 are four types of coronaviruses (Hman Coronavirus: HCoV) that infect humans on a daily basis, and many infected people are mild but cause high fever. There is also. Severe acute respiratory syndrome coronavirus (SARS-CoV) occurred in Guangdongzhou, China in 2002 and spread to more than 30 countries and regions between November 2002 and July 2003 (lethal rate 9. 6%).
- SARS-CoV Severe acute respiratory syndrome coronavirus
- Middle East Respiratory Syndrome Coronavirus (MERS-CoV) is a virus that causes cold symptoms in human cobra kuda, but it is thought to cause severe pneumonia when it infects humans beyond the species barrier (case fatality rate 34.4%).
- the 2019 new coronavirus is caused by the SARS-CoV-2 virus (referred to as the COVID-19 virus), and the global epidemic poses an unprecedented threat to the world.
- Chlorous acid water contains chlorous acid (HClO 2 ) as a main active ingredient (Patent Document 1).
- chlorinated water is effective in killing the coronavirus, and completed the present disclosure.
- the present inventors have also discovered that chlorinated water is effective in killing the 2019 new coronavirus, and completed the present disclosure.
- the present invention provides the following items.
- the coronavirus is Coracovirus subgenus, Decacovirus subgenus, Duvinacovirus subgenus, Lucacovirus subgenus, Minacovirus subgenus, Minunacovirus subgenus, Myotacovirus subgenus, Nictacovirus subgenus.
- Pedakovirus subgenus Rinacovirus subgenus, Setracovirus subgenus, Soracovirus subgenus, Snakovirus subgenus, Tegacovirus subgenus, Embecovirus subgenus, Hibecovirus subgenus, Melbecovirus subgenus, Novecovirus subgenus , Salvecovirus subgenus, Andecovirus subgenus, Bulldecovirus subgenus, Heldecovirus subgenus, Brangacovirus subgenus, Segacovirus subgenus, or Igacovirus subgenus, any of items 1 to 11. Or the killing agent described in item 1.
- SARS-CoV SARS coronavirus
- MERS coronavirus MERS coronavirus
- SARS-CoV 2019 new coronavirus
- FIG. 1 shows the results of an antiviral test against SARS-CoV-2 in chlorinated water in the absence of organic matter. Under each condition, the left side is No-virus and the right side is SARS-CoV-2.
- FIG. 2 shows the results of an antiviral test against SARS-CoV-2 in chlorinated water in the presence of organic matter. Under the conditions, the left side is No-virus and the right side is SARS-CoV-2.
- references to "about” with respect to a value or parameter herein include variations relating to the value or parameter itself. Unless otherwise specified, for example, “about X” includes “X” itself and a value that allows an error of ⁇ 10% thereof.
- chlorite water an aqueous solution containing chlorite to be used as fungicides (HClO 2), a chlorite (HClO 2) for a long time stably maintained It is something that can be done.
- acid chlorite ion represent the peak around 260nm between wavelengths 240 ⁇ 420 nm in the UV spectrum (H + + ClO 2 -) in the absorbing section and 350nm near containing
- two absorbent parts containing chlorine dioxide (ClO 2) representing a peak can be confirmed at the same time, that is, when a twin aneurysm is shown, the presence of chlorous acid water can be recognized.
- the "standard value of chlorous acid water” means a value calculated by a predetermined method for the concentration of chlorous acid in the chlorous acid water, and is used in the same manner as described in Examples. The value is calculated.
- chlorite water having a standard value of 4 to 6 can be used as a drug substance, and the chlorite water preparation using this can contain 4 to 6% of the raw material chlorite water.
- content chlorous acid 68.46
- content chlorous acid 68.46
- a system product for example, chlorous acid water
- chlorous acid water a value obtained by the iodine reduction titration method.
- the chlorinated water can be prepared by the method disclosed in International Publications WO2008 / 026607, WO2014 / 188310, WO2014 / 188311, WO2014 / 188312, WO2015 / 093062, WO2017 / 170904.
- Chlorous acid water was designated as a food additive on February 1, 2013, and is a bactericidal agent containing chlorous acid (HClO 2 ) as the main active ingredient, and is the main component of this "chlorous acid water".
- the active ingredient, chlorous acid (HClO 2 ) is a semi-stable chemical and is recognized by the US USDA and FDA as a particularly safe substance in food additives: processing aids.
- the chlorite water used in the present disclosure may or may not correspond to a food additive, and may be provided as a pharmaceutical product, a quasi-drug or a miscellaneous product.
- chlorinated water can exert a strong bactericidal effect even in the presence of organic substances, and at the National Institute of Health Sciences (commonly known as Kokueiken), "2015 norovirus inactivation” In the “Survey on Conditions", "The only thing that could be inactivated below the detection limit under all load conditions was chlorinated water.”
- Kokueiken National Institute of Health Sciences
- chlorous acid water whose main active ingredient is chlorous acid, is superior in coronavirus killing (disinfection) compared to other chlorine-based chemicals "hypochlorous acid water” and “sodium hypochlorite”. ⁇ It was found to have a sterilizing effect. In this way, chlorinated water possesses strong bactericidal activity, but its reactivity is slow, so it can be used for fingers, and the bactericidal effect (immediate effect) exerted instantly. ), But it has a gradual reactivity while having an accurate bactericidal power, and also has a feature of maintaining a stable bactericidal power.
- Chloric acid water is sterilized slowly but surely and accurately in a dirty environment where many organic substances are present, which has been said to be the weakest point for chlorine oxide-based chemicals. It can be effective. (Bactericidal power against microorganisms lurking in dirt). For example, regarding the effect of "chlorite water” in the presence of organic matter, it was published in the "2015 Survey Report on Norovirus Inactivation Conditions (National Institute of Health Sciences, Food Sanitation Management Department)" on the Ministry of Health, Labor and Welfare website. There is.
- “Hydronic acid water” does not need to be prepared at the time of use, does not require a dedicated generator for that purpose, and anyone can use it anywhere they want, and it is safe.
- chlorous acid water preparation indicates a preparation prepared by using the chlorite water as a drug substance.
- additional components pH, chlorous acid content, free chlorine concentration and the like can be adjusted.
- drug substance chlorite water refers to chlorite water used as a drug substance.
- the chlorinated water can be prepared by a method as described herein.
- the "hydraulic acid water preparation" used in the present disclosure may not cause any damage even if it comes into direct contact with an animal because it is less irritating.
- the hypochlorite water preparation used in the present disclosure has no skin corrosive reaction when applied to the skin, has no erythema or edema, and has normal cornea, glow, and conjunctiva when applied to the eye. , May not show skin sensitization.
- the content of chlorinated water is the iodine reduction titration method
- free chlorine “free chlorine concentration” or “free residual chlorine concentration” is the provision of Article 17, Paragraph 2 of the Enforcement Regulations of the Waterworks Law. It is a value measured by Appendix 3 (hereinafter referred to as the colorimetric method (DPD indicator)) of "Inspection method for free residual chlorine and bound chlorine specified by the Minister of Health, Labor and Welfare", and is obtained by oxidizing the DPD indicator. The value.
- DPD indicator colorimetric method
- a coronavirus killing agent comprising chlorite water.
- chlorine-based disinfectants, disinfectants, and disinfectants are not suitable for application of sodium hypochlorite on fingers, and hypochlorous acid water has an effect on fingers. Is unknown and is not applicable. Therefore, the use of the chlorinated water of the present disclosure as a coronavirus killing agent is unexpected even considering that it is a chlorine-based bactericidal agent, and the effect of the conventionally known chlorinated water is taken into consideration.
- the coronavirus containing SARS-CoV-2 could be killed. It has also been shown to be able to be sprayed or soaked directly into the fingers when used in the same manner as alcohol for daily disinfection, which is a significant difference from other chlorine-based disinfectants and is advantageous. Is.
- L at least 50 mg / L, at least 60 mg / L, at least 70 mg / L, at least 80 mg / L, at least 90 mg / L, at least 100 mg / L, at least 500 mg / L, at least 1000 mg / L, at least 2000 mg / L, at least 3000 mg / L L, at least 4000 mg / L, at least 5000 mg / L, at least 6000 mg / L, at least 7000 mg / L, at least 8000 mg / L, at least 9000 mg / L, at least 10,000 mg / L.
- the standard value of the chlorinated water can be 4 to 6%.
- the present disclosure also allows the coronavirus to be a letovirus subfamily or an orthocoronavirus subfamily.
- the present disclosure also allows the coronavirus to be of the genus Alpha Coronavirus, Betacoronavirus, Gamma Coronavirus, Delta Coronavirus.
- the present disclosure also allows the coronavirus to be a virus belonging to the genus Betacoronavirus.
- the coronavirus is a coronavirus subgenus, a decacovirus subgenus, a duvinacovirus subgenus, a ruchacovirus subgenus, a minacovirus subgenus, a minunacovirus subgenus, a myotacovirus subgenus, Nictacovirus subgenus, Pedakovirus subgenus, Rinacovirus subgenus, Setracovirus subgenus, Soracovirus subgenus, Snakovirus subgenus, Tegacovirus subgenus, Enbecovirus subgenus, Hibecovirus subgenus, Melbecovirus subgenus It can be a genus, Novecovirus subgenus, Salvecovirus subgenus, Andecovirus subgenus, Bulldecovirus subgenus, Heldecovirus subgenus, Brangacovirus subgenus, Segacovirus subgenus, or Igakovirus subgenus.
- the present disclosure also allows the coronavirus to be a coronavirus that infects humans.
- the coronavirus is HCoV-HKU1, HCoV-OC43, SARS coronavirus (SARS-CoV), MERS coronavirus (MERS-CoV), or 2019 new coronavirus (SARS-CoV-2). obtain.
- the present disclosure also allows the coronavirus to be SARS coronavirus (SARS-CoV), MERS coronavirus (MERS-CoV), or 2019 new coronavirus (SARS-CoV-2).
- SARS-CoV SARS coronavirus
- MERS-CoV MERS coronavirus
- SARS-CoV-2 2019 new coronavirus
- the killing agent can be a killing agent on the fingers.
- the present disclosure also provides a method of killing a coronavirus using chlorinated water.
- the present disclosure also states that the coronavirus is contacted with the chlorite water in the absence of organic matter.
- the present disclosure also states that the coronavirus is contacted with the chlorite water in the presence of organic matter.
- L at least 70 mg / L, at least 80 mg / L, at least 90 mg / L, at least 100 mg / L, at least 200 mg / L, at least 300 mg / L, at least 400 mg / L, at least 500 mg / L, at least 600 mg / L, at least 700 mg / L L, at least 800 mg / L, at least 900 mg / L, at least 1000 mg / L, at least 2000 mg / L, at least 3000 mg / L, at least 4000 mg / L, at least 5000 mg / L, at least 6000 mg / L, at least 7000 mg / L, at least 8000 mg / L L, can be at least 9000 mg / L, at least 10000 mg / L.
- the present disclosure also provides chlorinated water for killing the coronavirus.
- the chlorite water used in the present disclosure has the characteristics found by the present inventors.
- a chlorite water produced by any method such as a known production method as described in the above-mentioned literature can be used.
- As a typical composition for example, 61.40% of chlorinated water, 1.00% of potassium dihydrogen phosphate, 0.10% of potassium hydroxide and 37.50% of purified water are blended and used. (Sold by the applicant. 72% of chlorinated water corresponds to 30,000 ppm of chlorite), but the present invention is not limited to this.
- This agent reduces the attenuation of chlorous acid due to contact with organic matter under acidic conditions, but maintains its bactericidal effect.
- the generation of chlorine gas is slight, and it also has the characteristic of suppressing the amplification of the odor of a mixture of chlorine and organic substances.
- the chlorinated water of the present disclosure is reacted by adding sulfuric acid or an aqueous solution thereof to an aqueous solution of sodium chlorate in an amount and concentration capable of maintaining the pH value of the aqueous solution at 3.4 or less.
- sulfuric acid or an aqueous solution thereof to an aqueous solution of sodium chlorate in an amount and concentration capable of maintaining the pH value of the aqueous solution at 3.4 or less.
- the chlorous acid water of the present disclosure is prepared by adding sulfuric acid or an aqueous solution thereof to an aqueous solution of sodium chlorate in an amount and concentration capable of maintaining the pH value of the aqueous solution at 3.4 or less.
- chlorous acid is generated, and then chlorous acid is generated by adding hydrogen hydrogen in an amount equal to or more than the amount required for the reduction reaction of chlorous acid. It is produced by adding either a single inorganic acid or an inorganic acid salt, or two or more types of a single substance, or a combination thereof, and adjusting the pH value within the range of 2.3 to 8.5. be able to.
- the chlorinated water of the present disclosure is prepared by adding sulfuric acid or an aqueous solution thereof to an aqueous solution of sodium chlorate in an amount and concentration capable of maintaining the pH value of the aqueous solution at 3.4 or less.
- chloric acid is generated, and then chloric acid is generated by adding hydrogen peroxide in an amount equal to or more than the amount required for the reduction reaction of the chloric acid.
- the chlorinated water of the present disclosure is prepared by adding sulfuric acid or an aqueous solution thereof to an aqueous sodium chlorate solution in an amount and concentration capable of maintaining the pH value of the aqueous solution at 3.4 or less.
- To generate chloric acid and then add hydrogen peroxide in an amount equal to or greater than the amount required for the reduction reaction of the chloric acid to form an aqueous solution containing chloric acid.
- carbonic acid, phosphoric acid, boric acid or sulfuric acid can be used as the inorganic acid in the above method.
- the inorganic acid salt can be a carbonate, an inorganic hydroxide, a phosphate or a borate.
- sodium carbonate, potassium carbonate, sodium hydrogencarbonate or potassium hydrogencarbonate can be used as the carbonate.
- sodium hydroxide or potassium hydroxide, calcium hydroxide, and barium hydroxide can be used as the inorganic hydroxide.
- the phosphate used is disodium hydrogen phosphate, sodium dihydrogen phosphate, trisodium phosphate, tripotassium phosphate, dipotassium hydrogen phosphate or potassium dihydrogen phosphate. be able to.
- sodium borate or potassium borate can be used as the borate.
- succinic acid citric acid, malic acid, acetic acid or lactic acid can be used as the organic acid.
- the organic acid salts include sodium succinate, potassium succinate, sodium citrate, potassium citrate, sodium malate, potassium malate, sodium acetate, potassium acetate, sodium lactate, potassium lactate.
- potassium lactate can be used.
- chlorous acid water containing chlorous acid (HClO 2 ) that can be used as a bacterial killing agent
- sulfuric acid (H 2 SO 4 ) or an aqueous solution thereof is added to an aqueous solution of sodium chlorate (NaClO 3).
- chlorous acid (HClO 3 ) obtained under acidic conditions is added with hydrogen peroxide (H 2 O 2 ) in an amount necessary for converting chlorous acid (HClO 3) into chlorous acid by a reduction reaction.
- Generate (HClO 2 ) The basic chemical reaction of this production method is represented by the following formulas A and B.
- Formula A shows that chloric acid can be obtained by adding sulfuric acid (H 2 SO 4 ) or an aqueous solution thereof in an amount and concentration that can maintain the pH value of an aqueous solution of sodium chlorate (NaClO 3) within acidity. Then, the B-type, chlorate (HClO 3) is reduced with hydrogen peroxide (H 2 O 2), shows that the chlorite (HClO 2) is generated.
- chlorine dioxide gas (ClO 2 ) is generated (C type), but by coexisting with hydrogen peroxide (H 2 O 2 ), chlorous acid (HClO 2) undergoes the reaction of formulas D to F. ) Is generated.
- chlorous acid HClO 2
- chloride ion Cl ⁇
- hypochlorous acid HClO
- chlorous acid (HClO 2 ) or chlorine dioxide gas (ClO 2 ) obtained by the above method or an aqueous solution containing these is mixed with an inorganic acid, an inorganic acid salt, an organic acid or an organic acid salt, either alone or in two types.
- Chlorous acid (HClO 2 ) can be stably maintained for a long period of time by creating a transition state and delaying the decomposition reaction by adding the above single substance or a combination thereof.
- chlorous acid (HClO 2 ) or chlorine dioxide gas (ClO 2 ) obtained by the above method or an aqueous solution containing these is mixed with an inorganic acid or an inorganic acid salt, specifically, a carbonate or an inorganic hydroxide. It is possible to use a single substance, two or more types of single substances, or a combination of these.
- an inorganic acid, an inorganic acid salt specifically, a carbonate or an inorganic hydroxide is added to an aqueous solution containing a single substance, two or more kinds of simple substances, or a combination thereof, and the inorganic acid, the inorganic acid salt, and the like. It is possible to use an organic acid or an organic acid salt added alone or in combination of two or more kinds, or in combination thereof.
- an inorganic acid, an inorganic acid salt, an organic acid or an organic acid salt is added to the aqueous solution produced by the above method alone, in combination of two or more kinds, or in combination thereof. You can use things.
- Examples of the inorganic acid include carbonic acid, phosphoric acid, boric acid or sulfuric acid.
- Examples of the inorganic acid salt include carbonates and inorganic hydroxides, as well as phosphates or borates. More specifically, the carbonates include sodium carbonate, potassium carbonate, sodium hydrogencarbonate, and the like. Potassium hydrogen carbonate, inorganic hydroxides are sodium hydroxide and potassium hydroxide, calcium hydroxide, barium hydroxide, phosphates are disodium hydrogen phosphate, sodium dihydrogen phosphate, trisodium phosphate, phosphoric acid. As tripotassium, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, and borate, sodium borate and potassium borate may be used.
- organic acid examples include succinic acid, citric acid, malic acid, acetic acid and lactic acid.
- organic acid salt sodium succinate, potassium succinate, sodium citrate, potassium citrate, sodium malate, potassium malate, sodium acetate, potassium acetate, sodium lactate, potassium lactate or calcium lactate are suitable.
- the decomposition rate of the chlorite aqueous solution at pH increases as the pH decreases, that is, the acid becomes stronger. That is, the absolute speeds of the reactions (a), (b) and (c) in the above formula are increased.
- the proportion of the reaction (a) decreases as the pH decreases, but the total decomposition rate fluctuates greatly, that is, increases, so that the amount of chlorine dioxide (ClO 2 ) generated also increases as the pH decreases.
- the lower the pH value the faster the sterilization and bleaching, but the irritating and harmful chlorine dioxide gas (ClO 2 ) makes the work difficult and adversely affects human health.
- the reaction of chlorous acid to chlorine dioxide proceeds rapidly, the chlorous acid becomes unstable, and the time during which the bactericidal activity can be maintained is extremely short.
- the pH is determined from the viewpoint of suppressing the generation of chlorine dioxide and balancing with the bactericidal activity. Adjust the value in the range of 2.3 to 8.5.
- the chlorinated water of the present disclosure is also electrolyzed in a diaphragmless electrolytic cell (meaning one composed of an anode and a cathode not separated by a diaphragm) under acidic conditions by adding hydrochloric acid to a saturated solution of sodium chloride. It can be an aqueous solution obtained by adding hydrochloric acid to the aqueous solution thus obtained to make it strongly acidic, and adding a hydrogen peroxide solution to the chloric acid produced thereby to react.
- the chlorinated water may be as described in the 9th Edition Food Additives Official Regulations 2018 (Consumer Affairs Agency, Ministry of Health, Labor and Welfare).
- chlorinate water preparations that can be used in this disclosure include “Care for Hand”, “Care for Hands Pro Free”, “Care for Fresh”, and “Out Rock Super” manufactured by Sankei Co., Ltd. , “New Out Rock SP”, “Care Forpis Pro Free”, “Care for No. 3", “Care for Norobarrier Plus”, “Chlorus Care 8", “Chlorus Care 10" and the like.
- the oxidizing power of a chlorine oxide drug is generally determined by a measurement method using a free chlorine concentration, a DPD method, a colorimetric method such as the TMB method, or the like.
- the effective chlorine content can be determined by using the iodine reduction titration method.
- the new coronavirus infection (COVID-19) is a respiratory infection caused by SARS-CoV-2 (COVID-19 virus).
- COVID-19 virus is transmitted primarily through close physical contact and respiratory-related droplets, but can also be transmitted by air in medical procedures that generate aerosols.
- no studies have been approved to conclude the association between the transmission of the COVID-19 virus and the contamination of environmental surfaces (surfaces of facilities, equipment, articles, etc.).
- Environmental surfaces in health facilities include tables, chairs, walls, lighting switches, computer peripherals, electronic devices, sinks, toilets, furniture and fixed items inside and outside the patient's room and bathroom, and There are non-critical (medical) devices such as blood pressure cuffs, stethoscopes, wheelchairs, and incubators.
- Environmental surfaces in non-health care facilities include sinks, toilets, electronic devices (touch screens and buttons), furniture, and fixed items such as countertops, stair railings, floors and walls.
- the transmission of the COVID-19 virus is considered to be related to close situations in closed spaces such as homes, health care facilities, and nursing / residential elderly facilities. It has also been clarified that events in which COVID-19 is transmitted are likely to occur in community environments other than health care facilities, such as publicly available buildings, religious organization facilities, stores, transportation facilities, and workplaces. It is still unclear how mediation infections are involved and whether disinfection work is required outside of health care facilities, but so that it can be applied to the environment of non-health care facilities. It is necessary to curb the spread of virus infections such as cleaning and disinfection measures (for example, the provisional guidance currently published by WHO on the environment of non-health care facilities such as recommendations on cleaning and disinfection of the environment includes religious facilities.
- Frequent hand washing and face-free transmission can be associated with surface contamination in any environment, including areas where regular cleaning and disinfection is not possible due to limited resources. It is the main preventive measure to reduce sex.
- SARS-CoV-2 like other coronaviruses, is an enveloped virus with a fragile outer membrane consisting of lipids, so it is more resistant to disinfectants than non-enveloped viruses such as rotavirus, norovirus, and poliovirus. Highly sensitive.
- Several studies have evaluated the duration of COVID-19 virus infectivity on various environmental surfaces. One study reported that the COVID-19 virus survived for 1 day on cloth and wood surfaces, 2 days on glass surfaces, 4 days on stainless steel and plastic surfaces, and 7 days on the outer layer of medical masks. There is. Another study reported that the COVID-19 virus survived 4 hours on copper surfaces, 24 hours on corrugated cardboard surfaces, and 72 hours on plastic and stainless steel surfaces.
- COVID-19 virus survives in environments with a wide range of pH values and outside temperatures, but is highly susceptible to heat and standard disinfection methods. However, such studies were conducted under laboratory conditions that were not cleaned or disinfected and should be carefully interpreted for application in a real environment.
- This disclosure provides cleaning and disinfection of environmental surfaces in consideration of the new coronavirus infection (COVID-19).
- This disclosure may be intended for health care professionals, public health professionals, and authorities who develop and implement policies and standard operating procedures (SOPs) on environmental surface cleaning and disinfection in consideration of COVID-19.
- SOPs standard operating procedures
- Comprehensive guidance on the implementation of environmental cleaning and disinfection is provided by WHO's "Required Standards for Environmental Health in Healthcare Facilities” and “Resources” jointly issued by the US Center for Disease Control and Prevention and the Infection Control Africa Network. Best Practices for Environmental Cleaning in Healthcare Facilities with Limited ”. Procedures for decontaminating equipment and semi-critical / critical equipment are described in WHO's "Decontamination and Reuse of Medical Devices in Healthcare Facilities”.
- Cleaning and Disinfection Principles Cleaning helps remove or significantly reduce viruses on contaminated environmental surfaces and is a necessary first step in any disinfection operation.
- Cleaning with water, soap (or mild detergent) and mechanical work (brushing or scrubbing) completely or partially removes dirt, dust, and organic matter such as blood, secretions, and excrement. It can, but it does not kill microorganisms.
- Some disinfectants prevent the disinfectant from coming into direct contact with the surface due to organic matter, and the antiviral effect and mechanism of action are impaired. Therefore, after cleaning, disinfection with chemicals such as chlorine and alcohol should be performed to kill the remaining microorganisms.
- the disinfectant prepare and use the solution according to the amount and contact time recommended by the manufacturer. Improper dilution to a concentration (too high or too low) at the time of preparation can reduce efficacy. If the concentration is too high, the exposure of chemicals to the user will increase and may damage the environmental surface. A sufficient amount of disinfectant solution should be used according to the manufacturer's recommendations to allow the virus to be inactivated by leaving the surface moist and untouched for a sufficient period of time. Cleaning the training facility environment in health care facilities is a complex intervention for infection prevention and control and requires a multifaceted approach such as training, monitoring, auditing, feedback, memorandums, and posting of SOPs at critical locations. ..
- Training of staff involved in cleaning should be conducted based on the policy of the health care institution concerned, SOP and national guidelines. It should be assembled, targeted and implemented in an appropriate manner (participatory, appropriate literacy level, etc.) and is mandatory if staff are assigned to a new workplace.
- the training program requires an explanation of risk assessment and ensures that safe preparation of disinfectants, mechanical cleaning and use of cleaning tools, standard precautions, and transmission route-specific precautions are also taken.
- Re-education courses are also recommended to facilitate effective practice. In health care facilities and public buildings, keep posters and instructions visible so that cleaning staff and other staff can remember to take appropriate steps regarding the preparation and use of disinfectants.
- the dirtiest (cleanest) place to the dirtiest place is the last to clean the dust that has fallen on the floor in a systematic way that leaves no uncleaned areas. Clean to a (dirty) place and from a high position to a low position. Use a new rag for each cleaning task (eg, daily cleaning in a general ward). Discard the rag that is no longer soaked with the solution. In areas where there is a high risk of contamination with the COVID-19 virus, replace each patient's bed with a new rag each time they are cleaned. Dirty rags should be reused after use using appropriate methods, and refer to the SOP for the frequency of rag replacement.
- Cleaning tools must be properly maintained and managed. Cleaning tools used in areas where COVID-19 patients are isolated should be color coded to distinguish them from other tools. Detergents and disinfectants are contaminated during cleaning and become less effective if the amount of organic matter is too high, so continued use of the same solution can lead to the attachment of microorganisms to the surface to be cleaned next. Therefore, wherever COVID-19 suspected / confirmed patients use, detergent and / or disinfectant solutions must be discarded after each use. The solution should be freshly prepared daily or with each cleaning shift. It is recommended to wash the bucket with detergent, rinse it, dry it, and store it face down when not in use and completely drained.
- PPE personal protective equipment
- PPE personal protective equipment
- Disinfectant solutions should always be prepared in a well-ventilated area. Do not mix disinfectants during preparation or use. This is because mixing multiple disinfectants, especially hypochlorite solutions, produces gas that can irritate the respiratory system and cause death.
- the PPEs required for the preparation or use of disinfectants in health care facilities include long-sleeved uniforms, work shoes that cover the feet, gowns and / or impermeable aprons, rubber gloves, medical masks, and eyes.
- Protective equipment preferably a face shield. Where resources are available, rubber gloves, impermeable aprons, and foot covering shoes are recommended as minimal PPE in places where disinfectants are prepared and used in non-health care facilities. Eye protection and medical masks may also be needed if there is a risk of scattering or to protect against chemicals.
- the inactivating effect on enveloped viruses cannot be expected unless the concentration is 70% (v / v) or higher. With such a high concentration of alcohol, even the oils and fats of the user's fingers are removed at the time of use, and if the alcohol preparation installed at the entrance of a public institution is not used, entry into the facility is prohibited. Due to the measures taken, severe rough hands on the users have been caused, and it has already developed into a big social problem.
- Sodium hypochlorite sodium hypochlorite: Sodium hypochlorite
- Food additive sterilizer Food additive sterilizer.
- Sodium hypochlorite solution is made by blowing chlorine gas into sodium hydroxide (caustic soda), so it is strongly alkaline and its effective chlorine concentration is 4% (40,000 ppm) to 12% (12). (10,000 ppm) products are generally commercially available, and are diluted and used according to the purpose.
- virus countermeasure it is used for cleaning and soaking at a concentration of 200 ppm or more for sterilization, sterilization, disinfection, etc. at the time of cleaning general facilities such as doorknobs, cooking utensils, cooking facilities and kitchens.
- hypochlorous acid water The official one is described in the 9th Edition Food Additives Official Regulations, and "hypochlorite water” is a food additive sterilization set by the national government with a dedicated generator (electrolyzer) for acidic electrolyzed water. is a new name defined when specifying the fee, when electrolyzed in the electrolytic generator to dilute brine and aqueous hydrochloric acid, chloride ions at the anode reaction (Cl -) is generated, it is a water molecule (H 2 O) reacts to produce acidic electrolyzed water containing hypochlorous acid (HClO) and hydrochloric acid (HCl).
- HClO hypochlorous acid
- HCl hydrochloric acid
- hypochlorite water This is the original “hypochlorite water”, which is also the reason why it was originally called acidic electrolyzed water.
- the characteristics of this "hypochlorite water” are low concentration, but high activity, active against a wide range of bacteria, fungi, and viruses, and highly safe, but in the presence of organic matter, it immediately becomes organic matter. It is very important to remove organic substances, so-called stains, before use, as the activity is significantly reduced in response to the virus.
- This "hypochlorite water” itself is not commercially available. To the last, what the user purchases the generator and creates by operating this generator at the site of use should be called “hypochlorite water”, and from 10 ppm of effective chlorine at the usage concentration.
- chlorous acid Chlorous acid
- a formulation diluted to 400 ppm or 8000 ppm is distributed as a product so that it can be used by anyone, anytime, anywhere, freely, and can be carried and used as needed. This is used as it is or diluted further for wiping, dipping, and dropping.
- concentration is low, there is little metal corrosion and it does not irritate the skin and mucous membranes, so sterilization treatment by spraying (spray sterilization treatment on foodstuffs) is permitted.
- the drawback of this alcohol is that it becomes extremely ineffective as the concentration decreases. If the concentration is less than 50% v / V, the effect will be extremely lost. This is due to the sterilization mechanism of alcohol, and since the sterilization mechanism of alcohol is the denatured sterilization of tank quality and lipids by heat of vaporization, viruses with envelopes composed of proteins and lipids, so-called influenza virus and coronavirus, It is said to be effective, and it is difficult to be effective against viruses that do not have an envelope, so-called norovirus.
- the concentration will drop significantly due to the attached water, so it is suitable for use around water, in a place with a lot of water, or in a place where a large amount of water is used. I have to say that it is not suitable. Even if 99% v / v rubbing alcohol is spray-sterilized from 1cc to 2cc, if there are 1cc to 2cc of water droplets, the alcohol concentration will be 50% or less, and the sterilizing effect will be completely effective. You can't get it.
- Sodium hypochlorite so-called highter, bleach is suitable for sterilization, sterilization, and disinfection in such a watery place.
- Sodium or wiping with a 200 ppm solution of "sodium hypochlorite” is very effective against bacteria, fungi and viruses, and it is recommended to use a 500 ppm solution for non-enveloped virus control. It is said that it is necessary to treat with 1000ppm solution or more in a so-called dirty place in an environment with a lot of virus, and 5000ppm solution for treating feces and vomit.
- this "sodium hypochlorite solution” is said to sterilize by denaturing proteins and lipids in the highly alkaline range like alcohol, and it is irritating to the skin and mucous membranes, causing rough skin and rough hands and mucous membrane damage. On the contrary, it is highly likely to cause it and is very difficult to handle.
- hypochlorite water can create a hygienic environment in an instant by installing an acidic electrolyzed water generator, first washing it with a large amount of water, then washing the entire facility and sterilizing it.
- chlorite water is that anyone can carry it to the place where it is needed, wherever it is needed, and it can be carried and installed, and it is a liquid product obtained by electrolyzing salt. Is only this "chlorite water”. Therefore, it is very convenient and very suitable for installation in toilets, washrooms, bathrooms, kitchens, etc., where there is a lot of water and dirt.
- the undiluted solution (99% (v / v) alcohol has a bactericidal effect. (Generally, 75% or more).
- water is mixed (including when diluted), the bactericidal effect disappears. Therefore, treatment with alcohol should be limited to a dry place, and is not effective around water such as a hand-washing place.
- hypochlorite water and chlorite water which are near-neutral chlorine oxide bactericides, have low skin irritation and there is no concern about rough skin.
- hypochlorite water is just an aqueous solution obtained from the electrolyzer, and the hypochlorite water discharged from the electrolyzer immediately loses free chlorine, so use it in a bottle.
- chlorinated water has the advantage that it can be carried while maintaining free chlorine, which is an advantage that other disinfectants do not have, and chloric acid in this carryable state. Water has an inactivating effect on the new coronavirus.
- coronavirus killing agents of the present disclosure have a variety of uses, including pharmaceutical and non-pharmaceutical uses.
- coronavirus killing agent of the present disclosure is hypoallergenic to the skin and mucous membranes, and is used to sterilize the fingers of doctors, nurses, dentists, pharmacists, veterinarians, etc. in medical settings. obtain. It can be used to kill coronaviruses in humans, livestock, pets, etc.
- Non-medicinal uses include sterilizing the surface of daily necessities.
- Cookware including wooden), containers, cutting boards, colanders, cooking machines, sinks, workers' fingers, kitchens, door knobs, worktables, kitchenettes, tableware (including chopsticks), sponges, towels, washbasins, bathrooms, drainage Grooves, drainage pipes, toilet bowls, toilet seats, toilet paper holders, hand washing facilities, walls of living spaces (including toilets), floors, ceilings, tables, furniture, toys, milk bottles, pumping machines, rice milling, beans, fruits, seaweed It can be used in foods including varieties, fresh seafood (including whale meat), meat, meat products and whale meat products, and those preserved by salting, drying or other methods.
- the present disclosure discloses the use of chloric acid water as a coronavirus killing agent. It can be used to kill coronaviruses wherever they can be.
- the coronavirus killing agents of the present disclosure can be used for various purposes because they maintain stable bactericidal activity.
- the present disclosure discloses a method for killing coronavirus by chlorinated water.
- the coronavirus killing agent containing the chlorinated water of the present disclosure can be used as a stock solution or appropriately diluted depending on the intended use.
- the undiluted solution of the coronavirus killing agent of the present disclosure can be directly sprayed (approximate: twice per 10 cm 2 times), left for about 5 minutes, 10 minutes or more, or 30 minutes, then rinsed with running water and then dried.
- sponges, wipes, etc. they can be washed with a neutral detergent, then rinsed with running water, and immersed in a solution diluted 2 to 10 times with the coronavirus killing agent of the present disclosure for 30 minutes. After that, the water can be removed and the product can be dried as it is.
- parts can be removed from the machine body, washed with a neutral detergent, washed with running water, and the parts can be immersed in a 2 to 20-fold diluted solution of the coronavirus killing agent of the present disclosure for 10 minutes or more, preferably 30 minutes.
- the undiluted solution can be sprayed and left for 10 minutes or more, preferably 30 minutes to wipe it off.
- the machine body can be wiped off by spraying the undiluted solution of the coronavirus killing agent of the present disclosure and leaving it for 10 minutes or more, preferably 30 minutes.
- it can be wiped off with a cloth or the like containing a 2 to 20-fold diluted solution of the coronavirus killing agent of the present disclosure.
- the undiluted solution of the coronavirus killing agent of the present disclosure can be sprayed and left for 10 minutes or more, preferably 30 minutes to wipe off. Alternatively, it can be wiped off with a cloth or the like containing a 2 to 20-fold diluted solution of the coronavirus killing agent of the present disclosure.
- Tableware (normal time) can be washed with dish detergent, soaked in a 20-fold diluted solution of the coronavirus killing agent of the present disclosure for 30 minutes or more, washed with water, and stored dry in a hot air disinfection storage.
- the washbasin and bathroom it can be washed with a neutral detergent or the like, rinsed with running water, and the coronavirus killing agent of the present disclosure can be sprayed as it is without diluting it. After that, it can be rinsed with running water or wiped off with a cloth or non-woven fabric.
- the undiluted solution can be poured directly without diluting the coronavirus killing agent of the present disclosure, left for about 5 minutes, and then sufficiently rinsed with running water.
- the undiluted solution of the coronavirus killing agent of the present disclosure can be directly sprayed (reference: 2 or 3 times) after cleaning with a toilet detergent or the like. After that, it can be wiped off with a cloth, non-woven fabric, paper towel or the like.
- dilute the coronavirus killing agent disclosed in the present disclosure 2 to 4 times (however, a solution diluted 2 to 10 times may be used for daily disinfection), soak this solution in a clean cloth or non-woven fabric, and then wipe it. You may give it.
- the coronavirus killing agent disclosed in the present disclosure is diluted 2 to 4 times (however, a solution diluted 2 to 10 times may be used for daily cleaning), and this solution is sufficiently soaked in a mop, a rag, etc. You can wipe it off firmly.
- the vomitus (wet substance) can be wiped off with a disposable cloth, the dust can be put in a plastic bag, and the undiluted coronavirus killing agent can be applied to it.
- the floor and its surroundings to which vomitus and the like (wet substances) have adhered can be covered with a cloth or the like impregnated with the coronavirus killing agent of the present disclosure of the undiluted solution, or can be wiped off by soaking.
- chlorous acid water preparation used in the following examples was produced as follows.
- chlorinated water may be abbreviated as "sub-water”, but it has the same meaning.
- chlorinated water preparation was manufactured based on the following formulation.
- the concentration of "chlorite water” was measured based on the above-mentioned “quantification method of chlorite water” for the "chlorite water preparation produced with chlorite water” prepared based on the above preparation method, and each implementation was carried out.
- the chlorinated water of each example was prepared using a buffer solution (a phosphate buffer solution containing dipotassium hydrogen phosphate and potassium dihydrogen phosphate) prepared so as to have the free chlorine concentration described in the example. ..
- a 10% (w / v) aqueous solution was prepared and sterilized by filtration with a 0.1 ⁇ m-filter. An equal amount of virus solution was mixed with this and used for the test. In the mixed solution with the virus, the concentration of polypeptone was 5%, and the virus was diluted in half. When this virus mixture is mixed with reagents such as Chlorus N. Barrier at a ratio of (1: 9) and reacted, the final concentration of polypeptone in the reaction solution becomes 0.5%. For bovine serum albumin (BSA), a 0.6% (w / v) aqueous solution was similarly prepared so that the final concentration in the reaction solution was 0.03%.
- BSA bovine serum albumin
- the virus and reagent are mixed at a ratio of (1: 9), reacted at room temperature for a predetermined time, diluted 10-fold with DMEM to stop the reaction, and then diluted 10-fold in stages to virus by the TCID50 method. Infectious titers were measured (Table 4, Figure 1).
- the viral infectivity was reduced to the detection limit with the 1/10 diluted solution of chlorus acid / N / barrier. Since this infectious titer is the detection limit and no virus-infected cells have been observed, the actual infectious titer is considered to be lower than this, and the virus can be considered to be completely inactivated.
- the chlorasic acid / N / barrier 1/20 diluted solution reduces the viral infectivity to 1/1000 or less compared to untreated (DMEM), and is considered to have inactivating ability.
- the virus was inactivated to the detection limit with the chloraic acid / N / barrier x2, x4, x8 diluted solutions, and no effect of protein loading was observed.
- Chloramic acid, N, and barrier completely inactivated SARS-CoV-2 under the conditions of 1/10 dilution and 10-minute reaction.
- This disclosure provides coronavirus killing.
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Abstract
Description
亜塩素酸水を含むコロナウイルス殺傷剤。
前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、有機物非存在下では少なくとも1mg/Lである、項目1に記載の殺傷剤。
前記亜塩素酸水の含量 亜塩素酸(HClO2=68.46)としてが、有機物非存在下では少なくとも100ppmである、項目1に記載の殺傷剤。
前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、手指等の消毒を含む有機物存在下では少なくとも5mg/L以上である、項目1に記載の殺傷剤。
前記亜塩素酸水の含量 亜塩素酸(HClO2=68.46)としてが、手指等の消毒を含む有機物存在下では少なくとも200ppm以上である、項目1に記載の殺傷剤。
前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、0.5%BSA以上相当の汚物等を含む有機物存在下では少なくとも10mg/L以上である、項目1に記載の殺傷剤。
前記亜塩素酸水の含量 亜塩素酸(HClO2=68.46)としてが、0.5%BSA以上相当の汚物等を含む有機物存在下では少なくとも400ppm以上である、項目1に記載の殺傷剤。
前記亜塩素酸水の規格値が4~6%である、項目7に記載の殺傷剤。
前記コロナウイルスが、レトウイルス亜科またはオルトコロナウイルス亜科である、項目1~8のいずれか一項に記載の殺傷剤。
前記コロナウイルスが、アルファコロナウイルス属、ベータコロナウイルス属、ガンマコロナウイルス属、デルタコロナウイルス属である、項目1~9のいずれか一項に記載の殺傷剤。
前記コロナウイルスが、ベータコロナウイルス属に属するウイルスである、項目1~10のいずれか一項に記載の殺傷剤。
前記コロナウイルスが、コラコウイルス亜属、デカコウイルス亜属、ドゥヴィナコウイルス亜属、ルチャコウイルス亜属、ミナコウイルス亜属、ミヌナコウイルス亜属、マイオタコウイルス亜属、ニクタコウイルス亜属、ペダコウイルス亜属、ライナコウイルス亜属、セトラコウイルス亜属、ソラコウイルス亜属、スナコウイルス亜属、テガコウイルス亜属、エンベコウイルス亜属、ヒベコウイルス亜属、メルベコウイルス亜属、ノベコウイルス亜属、サルベコウイルス亜属、アンデコウイルス亜属、ブルデコウイルス亜属、ヘルデコウイルス亜属、ブランガコウイルス亜属、セガコウイルス亜属、またはイガコウイルス亜属である、項目1~11のいずれか一項に記載の殺傷剤。
前記コロナウイルスが、ヒトに感染するコロナウイルスである、項目1~12のいずれか一項に記載の殺傷剤。
前記コロナウイルスが、HCoV-HKU1、HCoV-OC43、SARSコロナウイルス(SARS-CoV)、MERSコロナウイルス(MERS-CoV)、または2019新型コロナウイルス(SARS-CoV-2)である、項目1~13のいずれか一項に記載の殺傷剤。
前記コロナウイルスが、SARSコロナウイルス(SARS-CoV)、MERSコロナウイルス(MERS-CoV)、または2019新型コロナウイルス(SARS-CoV-2)である、項目1~14のいずれか一項に記載の殺傷剤。
前記殺傷剤は、手指における殺傷剤であり、前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、少なくとも5mg/Lである、項目1~15のいずれか一項に記載の殺傷剤。
亜塩素酸水を用いてコロナウイルスを殺傷する方法。
前記コロナウイルスが、有機物非存在下で前記亜塩素酸水に接触される、項目17に記載の方法。
前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、少なくとも1mg/Lである、項目17または18に記載の方法。
前記コロナウイルスが、有機物存在下で前記亜塩素酸水に接触される、項目17~19のいずれか一項に記載の方法。
前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、少なくとも10mg/Lである、項目17~20のいずれか一項に記載の方法。
コロナウイルスを殺傷するための亜塩素酸水。
本開示の1つの局面において、亜塩素酸水を含むコロナウイルス殺傷剤が提供される。塩素系の消毒剤・殺菌・除菌剤は、厚生労働省のウェブサイトによれば、次亜塩素酸ナトリウムは、手指における適用が不適切とされており、次亜塩素酸水は、手指における効果は不明であり、適用できないともされている。それゆえ、本開示の亜塩素酸水のコロナウイルス殺傷剤としての用途は塩素系殺菌剤であることを考慮しても予想外であり、従来知られていた亜塩素酸水の効果を考慮しても、SARS-CoV-2を含むコロナウイルスを殺傷し得ることは予想外であった。また毎日の消毒に使用するためにアルコールと同様に使用する場合、手指に直接噴霧または浸漬して使用することができることも示されている点、他の塩素系消毒剤とは顕著に異なり、有利である。
本開示で使用される亜塩素酸水は、本発明者らが見出した特徴を有するものである。上述した文献に記載されるような既知の製法等の任意の方法により製造された亜塩素酸水を用いることができる。代表的な組成として、たとえば、亜塩素酸水61.40%、リン酸二水素カリウム1.00%、水酸化カリウム0.10%および精製水37.50%のものを配合し、使用することができる(出願人より販売される。亜塩素酸水72%は亜塩素酸30000ppmに該当する。)が、これに限定されない。この薬剤は、酸性条件下で、有機物との接触による亜塩素酸の減衰を低減させているが、殺菌効果は維持している。かつ、塩素ガスの発生が軽微であり、塩素と有機物が混合した臭いの増幅をおさえるという特徴をも有する。
亜塩素酸水と次亜塩素酸ナトリウムの抗微生物効果を比較・評価する上での問題として、塩素酸化物の濃度表記には有効塩素濃度と遊離塩素があり、抗微生物効果は、酸化力の源である遊離塩素に依存している。そして、次亜塩素酸ナトリウムは遊離塩素と有効塩素濃度との関係がほぼ1:1であるが、亜塩素酸水は、次亜塩素酸ナトリウムの様に、有効塩素濃度と遊離塩素が一致するというわけではない。そのため、両薬剤の殺菌力を、同じ土俵で比較する際は、有効塩素濃度ではなく、抗微生物効果を表している酸化力、つまりは遊離塩素を用いて、比較する必要がある。
新型コロナウイルス感染症(COVID-19)は、SARS-CoV-2(COVID-19ウイルス)によって引き起こされる呼吸器感染症である。COVID-19ウイルスは、主に、密接な物理的接触や呼吸器関連の飛沫を介して伝播するが、エアロゾルが発生する医療行為で空気感染する可能性もある。現時点では、COVID-19ウイルスの伝播と環境表面(施設、機材、物品等の表面)の汚染の関連を結論づける研究は認められていない。しかし、保健医療施設での機材・物品等の汚染に関するエビデンスや、他のコロナウイルスによる環境表面の汚染とその後の感染伝播との関連が認められている。したがって、保健医療施設や非保健医療施設でのCOVID-19伝播における媒介物の役割を少しでも縮小させることを目的とする。
清掃は、汚染された環境表面上のウイルスの除去、または著しい減少に役立ち、いかなる消毒作業にも必要な第一段階である。水、石けん(または中性洗剤)および機械的作業(ブラッシングや擦り洗い)を用いて清掃することで、汚れ、ちり、および、血液、分泌物、排泄物などの有機物を完全または部分的に除去できるが、微生物を殺しはしない。有機物によって消毒剤が表面に直接接触できなくなり、抗ウイルス効果や作用機序が阻害される消毒剤もある。したがって、清掃後は、残存する微生物を殺すために、塩素系やアルコールなどの化学物質を用いた消毒を行うべきである。
清掃できていない場所を残さないようにする体系的な方法で、床に落ちた塵を最後に清掃するため、最も汚れていない(きれいな)場所から最も汚れている(汚い)場所へ、かつ、高い位置から低い位置へと清掃は行う。清掃業務(例えば、一般病棟における毎日の掃除)ごとに、新しい雑巾を使用する。溶液がしみこまなくなった雑巾は廃棄する。COVID-19ウイルスによる汚染のリスクが高いと考えられる場所では、各患者のベッドを清掃するたびに新しい雑巾に交換する。汚れた雑巾は使用後、適切な方法を用いて再使用すべきであり、雑巾を交換する頻度についてはSOPを参考にする。
化学物質の曝露を避けるため、製造者の指示に従い、適切な個人防護具(PPE)を装着して消毒剤を安全に調製し取り扱う。消毒剤の選択には、対象とする微生物、および、推奨される濃度や接触時間、消毒剤の化学物質を当該表面に利用できるか、毒性、使いやすさ、製品の安定性などを考慮する。また、医療業界や食品業界など、特定の業界に適用されるあらゆる規制を含め、製造販売承認に関する地域当局の要求事項も満たす必要がある。
医療施設、従来とは異なる施設、自宅での療養時における環境の清掃と消毒にあたっては、表面の分類と清掃の頻度に関し、(清掃員や医療スタッフ等の)職責を明記した詳細なSOPに従う必要がある。照明のスイッチ、ベッドのフレーム、ドアの取っ手、輸液ポンプ、テーブル、水や飲み物のピッチャー、トレー、カートの持ち手、シンクなどの高頻度に接触する表面の環境洗浄については、特に注意を払い、頻繁に実施すべきである。ただし、接触可能な表面はすべて消毒する必要がある。清掃の実施状況と清浄度を定期的にモニタリングすべきである。清掃作業を最適化できるように、清掃員の人数を設定する。医療従事者には患者をケアしている間に手および設備が汚染するのを避けるため、清掃の予定と清掃完了時間を知らせ、表面や設備を接触する際のリスク評価結果がわかるようにしておく必要がある。
媒介物を介したCOVID-19ウイルス伝播のリスクが、保健医療施設と非保健医療施設の両環境で同等であることを示すエビデンスはない。しかし、家庭、職場、学校、ジム、レストランなど、非保健医療施設でのCOVID-19ウイルスによる汚染の可能性を低減することも重要である。このような非保健医療施設での高頻度に接触する表面は、優先して消毒すべき場所と考えるべきである。具体的には、ドアや窓の持ち手、台所や調理場、カウンター、バスルームの表面、トイレや蛇口、タッチスクリーン式の携帯情報端末、パソコンのキーボード、作業台の表面などが挙げられる。表面がダメージを受けないようにするため、また、家族や公共空間の利用者に対する毒性作用がないようにする、あるいは最小限にするため、消毒剤とその濃度は慎重に選択する。環境清掃のための方法や清掃に関する原則に可能な限り従う。有機物を除去するため、石けんと水または洗剤を用いて表面を洗浄してから消毒剤を用いて良い。
清掃員は、個人防護具(PPE)の安全な使用法についての訓練を受け、PPEを適切に装着する必要がある。COVID-19感染の疑い例または確定例が使用している場所、または、スクリーニング、トリアージ、診察が行われる場所で作業する場合は、PPE、すなわち、ガウン、作業用手袋、医療用マスク、目の防護具(有機物や化学物質の飛沫リスクがある場合)、足を覆う作業用の靴やブーツを着用しなければならない。消毒剤の溶液は、常に十分に換気された場所で調製する。調製時、使用時のいずれにおいても、消毒剤を混ぜてはならない。特に次亜塩素酸塩の溶液など、複数の消毒剤を混ぜると、呼吸器系を刺激し、死に至る可能性もあるガスを発生するためである。保健医療施設の職員が消毒剤を調製または使用する場合、保健医療施設で用いる消毒剤は高濃度で、勤務時間中の曝露時間も長くなるため、特定のPPEが必要となる。すなわち、保健医療施設での消毒剤の調製または使用に必要なPPEとしては、長袖の制服、足を覆う作業用の靴、ガウンおよび/または非浸透性のエプロン、ゴム手袋、医療用マスク、目の防護具(フェースシールドが望ましい)が挙げられる。非保健医療施設の消毒剤が調製・使用される場所では、リソースがあれば、最小限のPPEとしてゴム手袋、非浸透性のエプロン、足を覆う靴が推奨される。目の防護具および医療用マスクも、飛散リスクがある場合に、または、化学物質から防護するために必要な場合がある。
次亜塩素酸ナトリウムと次亜塩素酸水に関しては、電解型次亜塩素酸水では実現不可能な遊離塩素濃度35ppm以上で、かつ、有機物を十分に除去した状態でなければ、殺ウイルス効果はないと報告されている。食品添加物とは認められていないpH調整された次亜塩素酸ナトリウムを「高濃度次亜塩素酸水」と称して評価対象に加えたものであり、次亜塩素酸水そのものの活化効果は示されていない。
正規のものは、第9版食品添加物公定書に記載されており、「次亜塩素酸水」とは、国が酸性電解水を専用の生成装置(電解装置)とセットで食品添加物殺菌料に指定する際に定められた新たな名称であり、希薄な食塩水や塩酸水を電解生成装置で電解すると、陽極反応で塩化物イオン(Cl-)が生成され、それが水分子(H2O)と反応して次亜塩素酸(HClO)と塩酸(HCl)を含む酸性電解水が生成される。これが本来の「次亜塩素酸水」であり、当初酸性電解水と呼ばれていた所以でもある。又、この「次亜塩素酸水」の特徴は、濃度は低いが、活性が高く、広範囲の細菌類、真菌類、ウイルスに活性を示し、安全性に富むが、有機物存在下では有機物と即座に反応して活性が著しく減退するので、有機物いわゆる汚れをあらかじめ除去しておいてから使用することがとても重要である。なお、この「次亜塩素酸水」そのものは市販されていない。あくまでも生成装置をユーザーが購入し、使用現場で自らがこの生成装置を操作して作り出したもののことを「次亜塩素酸水」と呼ぶべきものであり、又、その使用濃度で有効塩素10ppmから80ppm、尚、正規の生成装置(2017年にJIS規格:JISB-8701が制定されている)であれば、必ずこの濃度の「次亜塩素酸水」が生成されるように設定されており、出来たてのできる限り新鮮なうちに希釈せず、流水状態いわゆるかけ流し、もしくはオーバーフローで使用することが原則で、水道の蛇口につなぐ流水型の生成装置からは連続して生成されるので流水で使用する事が出来、又、大型タンクに貯水してそこから配管で流水使用する事も出来る。
「次亜塩素酸ナトリウム」に酸を混和・希釈して酸性化した水溶液が、「次亜塩素酸水」の名称で出回っている。しかし、これは食品添加物の「次亜塩素酸水」とは似て非なる「疑似次亜塩素酸水」である。
「平成16年8月25日付けの食安基発大0825001号(厚生労働省医薬食品局食品安全部基準審査課長通知)による「次亜塩素酸ナトリウムに酸を混和して使用することについて」の中に、「2.また、平成11年6月25日衛化第31号厚生省生活衛生局食品化学課長通知「いわゆる電解水の取扱について」の2において、食品添加物「次亜塩素酸ナトリウム」を希釈したものを同等と取り扱われているいわゆる電解水についても、上記2.「次亜塩素酸水」と同様に取り扱うものとする。」と記載されている。よってこの「いわゆる電解水」は、通知が出てしばらくしてから「電解次亜水」という名称が定着した。その理由は、「次亜塩素酸ナトリウム」希釈液の通称として「次亜水」が一般化していたためである。」。
もっとも新しく食品添加物に認められた殺菌料であり、その製法は第9版食品添加物公定書の中で定義として定められている。又、その主たる有効成分である亜塩素酸(Chlorous Acid:クロラス酸)は、広範囲の細菌類や、真菌類、ウイルスに強い活性を示すと言う文献が多数あり、平成27年度の国立医薬品食品衛生研究所からの報告で、代替ウイルスであるが、「エンベロープを持たないウイルスで薬剤耐性がつよいノロウイルスに対して高い有機物存在下で唯一強い不活化活性を示した。」と言う報告があげられ、一躍脚光を浴びる事になり2018年医薬品第二類殺菌消毒剤の承認をきっかけに多くの利用価値に期待が寄せられている。
まずウイルス対策用の殺菌消毒除菌剤の選び方について、一般に水気の無いビルの出入口や施設や公共交通機関等不特定多数の人達が出入りするような場所に設置して手指の除菌や殺菌・消毒にもっとも適しているものは消毒用アルコールやアルコール製剤である。なお、その濃度としては50%v/v、出来れば75%v/v以上のアルコール濃度であれば細菌類、真菌類、ウイルスいずれにも一定の効果を示す。
本開示のコロナウイルス殺傷剤は、医薬用途および非医薬用途を含む種々の用途を有する。
本開示は、亜塩素酸水のコロナウイルス殺傷剤としての使用を開示する。コロナウイルスが存在し得る任意の場所におけるコロナウイルスの殺傷に使用され得る。本開示のコロナウイルス殺傷剤は、安定した殺菌力を持続するので、種々の用途に使用され得る。
本開示は、亜塩素酸水によるコロナウイルスの殺傷法を開示する。本開示の亜塩素酸水を含むコロナウイルス殺傷剤は、用途に応じて、原液のまま、または適切に希釈して使用され得る。
本品約5gを精密に量り,水を加えて正確に500mlとし、試料液とする。試料液20mlを正確に量り、ヨウ素フラスコに入れ、硫酸(1→10)10mlを加えた後、ヨウ化カリウム1gを加え、直ちに密栓をしてよく振り混ぜる。ヨウ素フラスコの上部にヨウ化カリウム試液5mlを入れ、暗所に15分間放置する。次に、栓を緩めてヨウ化カリウム試液を流し込み、直ちに密栓してよくふり混ぜた後、遊離したヨウ素を0.1mol/Lチオ硫酸ナトリウムで滴定する(指示薬 デンプン試液5ml)。ただし、デンプン使役は、終点近くで液がうすい黄色になったときに加え、終点は、液の青色が消えるときとする。別に空試験を行い、補正する。0.1mol/Lチオ硫酸ナトリウム溶液1ml=1.711mg HClO2)。
以下の実施例で使用される亜塩素酸水製剤は、以下のように製造した。本明細書では、亜塩素酸水は「亜水」と略称することがあるが、同義である。
亜塩素酸水による、SARS-CoV-2(2019新型コロナウイルス)に対する抗ウイルス試験を行った。
試験検体:クロラス酸・N・バリア(本部三慶):[成分・分量]100mL中、亜塩素酸水20g;含量(亜塩素酸HClO2=68.46)として0.8%[製造時]、遊離塩素濃度(Cl=35.45して)200mg/L以上
ウイルス:SARS-CoV-2(2019-nCoV/Japan/AI/I-004/2020)株(国立感染症研究所より分与)
細胞:VeroE6/TMPRSS2細胞(JCRB1819)
ウイルス液中FBS濃度:0%
試薬:Dulbecco'sModified Eagle Medium (DMEM) (富士フィルム和光純薬)、ハイポリペプトンN (富士フィルム和光純薬)、牛血清アルブミン,FractionV,特級 (片山化学工業)
試験方法:クロラス酸・N・バリアをポリスチレンチューブを用いて蒸留水で希釈した。
ウイルスとの反応もポリスチレンチューブ内で行った。
[抗ウイルス試験]
[蛋白質負荷抗ウイルス試験]
Claims (24)
- 亜塩素酸水を含むコロナウイルス殺傷剤。
- 前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、有機物非存在下では少なくとも1mg/Lである、請求項1に記載の殺傷剤。
- 前記亜塩素酸水の含量 亜塩素酸(HClO2=68.46)としてが、有機物非存在下では少なくとも100ppmである、請求項1に記載の殺傷剤。
- 前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、手指等の消毒を含む有機物存在下では少なくとも5mg/L以上である、請求項1に記載の殺傷剤。
- 前記亜塩素酸水の含量 亜塩素酸(HClO2=68.46)としてが、手指等の消毒を含む有機物存在下では少なくとも200ppm以上である、請求項1に記載の殺傷剤。
- 前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、0.5%BSA以上相当の汚物等を含む有機物存在下では少なくとも10mg/L以上である、請求項1に記載の殺傷剤。
- 前記亜塩素酸水の含量 亜塩素酸(HClO2=68.46)としてが、0.5%BSA以上相当の汚物等を含む有機物存在下では少なくとも400ppm以上である、請求項1に記載の殺傷剤。
- 前記亜塩素酸水の規格値が4~6%である、請求項7に記載の殺傷剤。
- 前記コロナウイルスが、レトウイルス亜科またはオルトコロナウイルス亜科である、請求項1~8のいずれか一項に記載の殺傷剤。
- 前記コロナウイルスが、アルファコロナウイルス属、ベータコロナウイルス属、ガンマコロナウイルス属、デルタコロナウイルス属である、請求項1~9のいずれか一項に記載の殺傷剤。
- 前記コロナウイルスが、ベータコロナウイルス属に属するウイルスである、請求項1~10のいずれか一項に記載の殺傷剤。
- 前記コロナウイルスが、コラコウイルス亜属、デカコウイルス亜属、ドゥヴィナコウイルス亜属、ルチャコウイルス亜属、ミナコウイルス亜属、ミヌナコウイルス亜属、マイオタコウイルス亜属、ニクタコウイルス亜属、ペダコウイルス亜属、ライナコウイルス亜属、セトラコウイルス亜属、ソラコウイルス亜属、スナコウイルス亜属、テガコウイルス亜属、エンベコウイルス亜属、ヒベコウイルス亜属、メルベコウイルス亜属、ノベコウイルス亜属、サルベコウイルス亜属、アンデコウイルス亜属、ブルデコウイルス亜属、ヘルデコウイルス亜属、ブランガコウイルス亜属、セガコウイルス亜属、またはイガコウイルス亜属である、請求項1~11のいずれか一項に記載の殺傷剤。
- 前記コロナウイルスが、ヒトに感染するコロナウイルスである、請求項1~12のいずれか一項に記載の殺傷剤。
- 前記コロナウイルスが、HCoV-HKU1、HCoV-OC43、SARSコロナウイルス(SARS-CoV)、MERSコロナウイルス(MERS-CoV)、または2019新型コロナウイルス(SARS-CoV-2)である、請求項1~13のいずれか一項に記載の殺傷剤。
- 前記コロナウイルスが、SARSコロナウイルス(SARS-CoV)、MERSコロナウイルス(MERS-CoV)、または2019新型コロナウイルス(SARS-CoV-2)である、請求項1~14のいずれか一項に記載の殺傷剤。
- 前記殺傷剤は、手指における殺傷剤であり、前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、少なくとも5mg/Lである、請求項1~15のいずれか一項に記載の殺傷剤。
- 亜塩素酸水を用いてコロナウイルスを殺傷する方法。
- 前記コロナウイルスが、有機物非存在下で前記亜塩素酸水に接触される、請求項17に記載の方法。
- 前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、少なくとも1mg/Lである、請求項17または18に記載の方法。
- 前記コロナウイルスが、有機物存在下で前記亜塩素酸水に接触される、請求項17~19のいずれか一項に記載の方法。
- 前記亜塩素酸水の遊離塩素濃度(Cl=35.45として)が、少なくとも10mg/Lである、請求項17~20のいずれか一項に記載の方法。
- コロナウイルスを殺傷するための亜塩素酸水。
- 亜塩素酸水の、コロナウイルス殺傷剤としての使用。
- 亜塩素酸水の、コロナウイルス殺傷剤を製造するための使用。
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| WO2008026607A1 (en) | 2006-08-28 | 2008-03-06 | Honbu Sankei Co., Ltd. | Process for producing aqueous chlorous acid solution for use as bactericide |
| WO2014188311A1 (en) | 2013-05-20 | 2014-11-27 | Honbu Sankei Co., Ltd. | Virus disinfectant containing chlorous acid aqueous solution |
| WO2014188312A2 (en) | 2013-05-20 | 2014-11-27 | Honbu Sankei Co., Ltd. | Long-term preservation and novel application of chlorous acid aqueous solution formulation |
| WO2014188310A1 (en) | 2013-05-20 | 2014-11-27 | Honbu Sankei Co., Ltd. | Drug-resistant microbe and variant microbe disinfectant containing chlorous acid aqueous solution |
| WO2015093062A1 (ja) | 2013-12-20 | 2015-06-25 | 本部三慶株式会社 | 二酸化塩素吸着による亜塩素酸水製造法 |
| WO2017170904A1 (ja) | 2016-03-31 | 2017-10-05 | 本部三慶株式会社 | 塩を電気分解して得られたものを原材料に用いた亜塩素酸水の製造方法 |
| JP2020125824A (ja) | 2019-02-05 | 2020-08-20 | 株式会社クボタ | 走行車両 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9023387D0 (en) * | 1990-10-26 | 1990-12-05 | Mcbride Hygiene Ltd | Chlorine dioxide releasing fluids |
-
2021
- 2021-07-21 WO PCT/JP2021/027361 patent/WO2022019334A1/ja not_active Ceased
- 2021-07-21 US US18/006,389 patent/US20230345942A1/en not_active Abandoned
- 2021-07-21 JP JP2022538044A patent/JPWO2022019334A1/ja active Pending
- 2021-07-21 EP EP21846163.0A patent/EP4186563A4/en not_active Withdrawn
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2025
- 2025-11-19 JP JP2025199240A patent/JP2026031579A/ja active Pending
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| WO2008026607A1 (en) | 2006-08-28 | 2008-03-06 | Honbu Sankei Co., Ltd. | Process for producing aqueous chlorous acid solution for use as bactericide |
| WO2014188311A1 (en) | 2013-05-20 | 2014-11-27 | Honbu Sankei Co., Ltd. | Virus disinfectant containing chlorous acid aqueous solution |
| WO2014188312A2 (en) | 2013-05-20 | 2014-11-27 | Honbu Sankei Co., Ltd. | Long-term preservation and novel application of chlorous acid aqueous solution formulation |
| WO2014188310A1 (en) | 2013-05-20 | 2014-11-27 | Honbu Sankei Co., Ltd. | Drug-resistant microbe and variant microbe disinfectant containing chlorous acid aqueous solution |
| JP2015071581A (ja) * | 2013-05-20 | 2015-04-16 | 本部三慶株式会社 | 亜塩素酸水含有ウイルス殺傷剤 |
| WO2015093062A1 (ja) | 2013-12-20 | 2015-06-25 | 本部三慶株式会社 | 二酸化塩素吸着による亜塩素酸水製造法 |
| WO2017170904A1 (ja) | 2016-03-31 | 2017-10-05 | 本部三慶株式会社 | 塩を電気分解して得られたものを原材料に用いた亜塩素酸水の製造方法 |
| JP2020125824A (ja) | 2019-02-05 | 2020-08-20 | 株式会社クボタ | 走行車両 |
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| Title |
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| ANONYMOUS: "In collaboration with the Ministry of Health, Labor and Welfare and the Consumer Affairs Agency, we have compiled a summary of disinfection and sterilization methods for the new coronavirus.", SIMULTANEOUS ANNOUNCEMENT: MINISTRY OF HEALTH, LABOR AND WELFARE, CONSUMER AFFAIRS AGENCY, MINISTRY OF HEALTH, LABOR AND WELFARE, CONSUMER AFFAIRS AGENCY, JP, JP, XP009543117, Retrieved from the Internet <URL:https://www.meti.go.jp/press/2020/06/20200626013/20200626013.html> * |
| JAPAN'S SPECIFICATIONS AND STANDARDS FOR FOOD ADDITIVES |
| See also references of EP4186563A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2022019334A1 (ja) | 2022-01-27 |
| EP4186563A1 (en) | 2023-05-31 |
| JP2026031579A (ja) | 2026-02-24 |
| EP4186563A4 (en) | 2024-07-24 |
| US20230345942A1 (en) | 2023-11-02 |
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